a-ak a-ha aaaa aaac aaad aaah aaca aacc aacd aach aack aada aadc aaha aahk aaka acaa acac acad acca accc accd acch acda acdc acha achh ackd adaa adac adad adah adak adcc adda addc addd adha adhd ahac ahad ahah ahha akaa akah akca akha akka c-cd caaa caac caah cac- caca cacc cach cack cada cadc cadd caha caka ccaa ccac ccad ccca cccc ccdc ccdh ccha cdaa cdac cdad cdda chaa chac chad chah chak chca chch chha chka ckac ckch ckck daad daca dada daha daka dcca dccc dddd dhaa dhad dhak dkdc haad haak hack hada hadh haha haka hakk hcca hccc hcch hdca hdda hhaa hhhh hkcc kaaa kaak kacc kacd kach kad- kada kadd kaha kahc kaka kakc kakh kakk kcaa kcac kcad kcah kcca kccc kccd kcck kcda kcdc kcdd kcha kchh kchk kckc kckk kdaa kdac kdad kdak kdca kdcc kdcd kddc kddd kddk kdka kdkd kdkk khac khad khak khca khcc khch khck khdc khdk khhk khka khkk kkaa kkac kkcd kkch kkck kkda kkdc kkdd kkha kkhh kkhk kkkk